Kuze kube manje ngaphambi kokuthenga ama-optic kwabaningi abanesifiso sokwazi kanjani ukuhlola lapho ukuthenga lens. Yebo, kumelwe bawuthatha ngokungathí sina kule nqubo. Ukuze uhlelo ngalunye, futhi amakhamera digital, kunezindawo eziningi ezahlukeneyo ezahlukene lens emakethe, esukela nesizotha $ 50 ku $ 10 000 (isibonelo: Canon Telephoto). Wokuqonda izidingo zakho - lokhu kuyisinyathelo sokuqala ukuba ukuthenga lens. Sidinga ukunquma ngokucacile lokho uyocibishela. Zibuze imibuzo efana okulandelayo ... - Kufanele I ukudubula kwendlu noma ngaphandle? - Ingabe kufanele ngingene ukuthatha izithombe okusheshayo ezihambayo izinto (isib, ezemidlalo)? - Ingabe ngifuna ukudubula ekumeni noma kokwenza umshado? - Ingabe Ngithanda ukudubula izilwane zasendle kanye nemvelo? - I Am ukwenza isibhamu ebukeka, izakhiwo noma Interiors? Lena yimibuzo kufanele uzibuze, bese unquma ibhajethi lalo. Uma uhlela ukuthenga SLR digital (DSLR), khona-ke, njengencenye yama-kit, uyoba vele lens eziyisisekelo, okwenza izithombe kuhle kakhulu. Nokho, isici esikhanga kakhulu nge yalolu hlobo ikhamera kungenzeka ukushintsha lens ukuthola Uhlaka engcono kuzo zonke izimo. Umbuzo obalulekile uwukuthi: kanjani ukuthola omunye esifanele izidingo zakho?
ukuqonda ingilazi
Ngaphambi hlola uma uthenga lens, kubalulekile ukuqonda ukuthi yini eyenza umuntu lens futhi ukuthi lihluke kanjani kwezinye, kuba okokuqala kudingekile ukuba angawazi imiqondo ezimbalwa eziyisisekelo. Ubude ebalulekile, ukukhuluma ngobuchwepheshe - kuyinto ubude ebalulekile lens, emelelwe ngamamilimitha, okuyinto ibanga phakathi ezingemuva lens umgomo indiza ebalulekile lapho imisebe parallel isigameko ukukhanya phezu lens bukhomba weyesi. Kubalulekile kuwe, ngoba ubude ebalulekile inquma engela umbono lens. I ezincane ubude ebalulekile, abantu abaningi emkhakheni umbono. Uma ukusondeza, emkhakheni umbono uncipha ukuze uthole kancane into, olubheka emikhulu maqondana imvelo. Ezweni bendabuko 35 mm ifilimu, ubude ebalulekile 16 mm kuya ku-35 mm, ngokuvamile zibhekwa engeli ebanzi. 50-mm lens, ukubizwa ngokuthi "okuvamile," ngoba lezi lens zifana kakhulu umbono we Iso lomuntu, futhi yini ngaphezu 100 mm, kubhekwa Telephoto. Nokho, ubude ebalulekile kancane nzima uma kuziwa DSLRs. Lokhu kungenxa yokuthi i-izinzwa isithombe amakhamera lingaphansi kuka-35 mm ifilimu, ngakho usike ingxenye yesithombe futhi unike umphumela obuphelele eside eqondile. Ukuze uthole umbono wokuthi indlela leli phutha sizothinta engela umbono lens, kubalulekile ukuba azale ande isivuno ikhamera yakho yedijithali. Nikon D40, isibonelo, isitshalo isici 1.5 x. Ngenxa yalokho, i-lens 35 mm unenkambu umbono -52 mm okulingana uma ibekwe D40.
diaphragm
Enye iBombela kanjani ukuhlola lapho ukuthenga lens, a diaphragm. Lokhu beso is a indlela elawula umthamo wokukhanya okudlula lens isithombe iveni. Diaphragm ngokuvamile okuthiwa ngokuya F-izitobhi, futhi ukumela inombolo efana f / 2.8. I umncane inombolo, elikhulu emgodini, futhi ukukhanya okwengeziwe ongena ikhamera. I-lens ikhamera, ephumela beso ububanzi kwenza kube nokwenzeka ukuba silondoloze ngesivinini ephakeme yesivalo ezimweni ongaphakeme ukukhanya. Lokhu kungaba ebalulekile ukuthola umfanekiso abukhali ngekhamera oluphathwayo. apertures okubanzi futhi unikeze inkululeko enkulu lokudala, okuvumela ukuba uphonse ngemuva ungagxilanga. Ngaphambi hlola uma uthenga lens, xhumana abantu ezinhle ukuqonda, njengoba abasebenzi esitolo akuzona abanekhono kulezi zindaba njalo. Ngakho, ungagcina isikhathi sakho nemali.